Full list of all 49 Risen 2: Dark Waters achievements. It takes around 35-40 hours to unlock all of the achievements in the base game on Windows.
The base game contains 43 achievements, and there are 2 DLC packs containing 6 achievements.
'Kill Mara' completed
'Defeat the Kraken' completed
Picked 100 locks
Dug up 50 treasures
'Four Muskets against Crow' completed
Completed 250 quests
Travelled by ship 20 times
Collected 20 legendary items
'The Greedy Captain' completed
Learned each skill once
Won drinking duel mini-game 10 times
Killed 20 ambient animals
Acquired 300,000 gold
Killed 2000 monsters
Killed 500 monsters
Killed 50 sea monsters
Used monkey 20 times
'The Split Soul' completed
'The Journey to the Underworld' completed
'Steelbeard's Artefact' completed
'Garcia's Masquerade Uncovered' completed
Acquired 100,000 gold
'Chaka Datu's Legacy' completed
'Following Garcia's Trail' completed
Collected 10 legendary items
'The Cunning Captain' completed
Won duel against Severin
'The Gnome Eater' completed
'Build a Raft' completed
At least 5 crew members on the ship
'Ship's Equipment' completed
'A New Ship' completed
'The Titan Weapon' completed
'The Ancestors' Blessing' completed
Killed 10 giant crabs
'Free Hawkins' completed
'Become a Pirate' completed
Found first treasure in the game
Drank first rum
Acquired 1000 gold
'Find Steelbeard' completed
Killed 10 monsters
'Rescue Patty!' completed
'The Marooned Sailor' completed
Killed all gargoyles and gave their eggs to Eldric
'The Air Temple' completed
Killed all alligators on Treasure Isle
Opened every deadly chest once
Set course for Treasure Isle for the first time